1. Various general-purpose brushed DC motors for speed regulation. 2. Various types of automobile motor speed control (automobile cooling fan speed control, automobile fan speed control, automobile wiper motor speed control, automobile air-conditioning fan speed control)3. Production line conveyor belt speed control, pipeline exhaust fan speed control, treadmill speed control, multiple computer fans parallel speed control, electronic fan speed control. 4. All kinds of DC bulb dimming, all kinds of DC heater temperature adjustment.1. GND: Connect to the negative pole of the DC power supply or connect the battery to strike iron when using the battery. 2. VCC: Connect the positive pole of the DC power supply or the positive pole of the battery when using the battery3. The positive pole of the motor: the positive pole of the voltage is connected to the positive pole of the DC power supply or the positive pole of the battery when using the battery4. Motor negative pole: connect the negative pole of the motor to the negative pole of the governor motor. After the wiring is correct, adjust the knob clockwise in the power-on sequence. At this time, you can hear or feel a crisp sound inside the governor switch. At this time, it is proved that the internal switch has been turned on. As the angle of the knob is continuously increased, the speed of the control motor is continuously accelerated.Colour: BlackMaterial: ABSName: Motor Speed Controller1. Working voltage: DC 9V-50V wide working voltage range2. Control power: 0.01-2000W (maximum instantaneous current 40A, long-term working current should be controlled within 20A) Different working voltages correspond to different control powers as follows.When working voltage is 12V, 12V x 40A = 480WWhen working voltage is 24V, 24V x 40A = 960WWhen working voltage is 36V, 36V x 40A = 1440WWhen working voltage is 40V, 40V x 40A = 1600W50V x 40A = 2000W when working voltage is 50V3. Quiescent current: 0.025A (when the working voltage is between DC10V and DC50V, the quiescent current will not exceed 25ma)4. PWM duty cycle: 5%-100%5. PWM frequency: 12khz6. Working temperature: -20 - 40 (ambient temperature of minus 20 degrees to 40 degrees above zero) This governor is of industrial grade quality and can work stably in a sub-zero environment. The general commercial grade quality governor is Can not work stably below zero.The size of the circuit board: 90 x 51 x 30mm (not including the adjustment part of the potentiometer)Package Contents: 1 x motor speed controllerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.